### Number Round Up

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

### Grouping Goodies

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

### Prime Magic

Place the numbers 1, 2, 3,..., 9 one on each square of a 3 by 3 grid so that all the rows and columns add up to a prime number. How many different solutions can you find?

# Number Detective

##### Age 5 to 11Challenge Level

Calling all detectives!

You will need to think creatively, use your reasoning skills and your problem-solving strategies to find the mystery number from the list below.

• The number has two digits.
• Both of the digits are even.
• The digit in the tens place is greater that the digit in the ones place.
• The ones digit is not in the three times table.
• The tens digit is not double the ones digit.
• The sum of the two digits is a multiple of five.

You might now like to play the game Statement Snap or have a go at Satisfying 4 Statements.